W3230 Digital LED Temperature Controller Module Digital Thermostat Switch with Waterproof Probe Programmable Heating Cooling Electronic Thermostat Range from -50℃ to 120℃ (12V 10A 120W) (2 Pieces)

I have 2 already in use 24x7 and they perform easily within specs and reliable. These two are added to my spare parts inventory.

This product works great but the instructions are a bit iffy used to replace a manual thermostat in a wine fridge to make it more useful and reliable this will not work in cases where the neutral isn’t at the switch location luckily the fridge I fixed had a light in it to provide the neutral side of the AC line.

Works as intended. Didn't come with instructions manual so can't change from Celcius to Fahrenheit.

been using this with a 200w heater in a 3d printer, been working great for months, no issues, would buy again, very easy to setup and does a decent job with little hysteresis, great value, pretty accurate no farenheight only Celsius.

I want to install a thermostat on/off for an attic fan, so bought this based on text description. On receipt: No installation instructions are included, no part ID on the device. The wire connections and labels are unlike any I've seen. A Utube video shows instrument wires being connected, not 14 or 12 gauge 110v. The Amazon product description indicates 110v/10A. I do not trust this one bit, and have ordered Iliving ILG-002T Fan Thermostat Control Box, 8, Silver instead - (the only device of its type at Amazon) . Very strange

I use as thermostat fan control for steam radiator. Adequate function.

Other than the instructions written in Engrish, I've found these to work well. Fortunately after many years of buying products from china I'm fluent in engrish. I installed these in my food truck to run the built in fridge. It has no problem switching the compressor on and off. One has the probe inside the cold box, the other has the probe taped to the compressor unit, controlling a fan to cool the compressor and evaporator. These were the last pieces I needed to get my fridge operating properly. They've been installed for 2 weeks and the fridge has maintained temp ever since.

These are very versatile and useful for either heating or cooling (ventilation). Instructions are difficult and my connection was mostly trial and error - I'm still not exactly sure how I did it but it works!! Had to go back to school and develop a Centigrade to Fahrenheit conversion chart. Not a big deal, but most devices are able to be readily programmed to display either scale - this one should be too! Digital accuracy of control for either heating or cooling seems very accurate. Can use either DC control current or 110V. Description says 10 amps, but I'm not sure this delicate device could tolerate that kind of current for a long time...I'm using them for a small fan and a heat lamp.